import java.util.Scanner;


public class F {
	Scanner in = new Scanner(System.in);
	
	public static void main(String[] args){
		F f = new F();
		f.go();
	}

	private void go(){
			int n = in.nextInt();
			in.nextLine();
			int p = in.nextInt();
			in.nextLine();
			int[] x = new int[n];
			int[] y = new int[n];
			for (int i=0; i<n; i++){
				x[i] = in.nextInt();
				y[i] = in.nextInt();
				in.nextLine();
			}
			String result = "impossible";
			double m = 0;
//			for (int i=0; i<n-1; i++){
//				for (int k=i+1; k<n; k++){
//					m = getSlope(x[i], y[i], x[k], y[k]);
//					int total = 1; 
//					for (int j=i+1; j<n; j++){
//						if (m == getSlope(x[i], y[i], x[j], y[j])){
//							total++; 
//						}
//					}
//					if ((1.0*total/n) *100 >= p){
//						result = "possible";
//						break; 
//					}
//
//				}
//			}
			System.out.println(result);
		
	}

	private double getSlope(int x1, int y1, int x2, int y2){
		return 1.0*(y2-y1)/(x2-x1);
	}
}